package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {



    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对

//        这里需要修改要求，也就是说，我需要   e10adc3949ba59abbe56e057f20f883e
        String passwordMD5=DigestUtils.md5DigestAsHex(password.getBytes());
        System.out.println(passwordMD5);//32
        System.out.println(employee.getPassword());//34
        System.out.println(!passwordMD5.equals(employee.getPassword()));
        System.out.println("111");
        System.out.println("122");

        // TODO 后期需要进行md5加密，然后再进行比对
        if (!passwordMD5.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    @Override
    public void save(EmployeeDTO employeeDTO) {

        //写一个方法也就是说当其username字段与数据库中字段有重复的时候，就抛出异常
//        String username = employeeDTO.getUsername();
//        //然后根据这个username查询记录
//        if(employeeMapper.getByUsername(username)!=null){
//            //就抛出异常
//            throw new RuntimeException("用户名字重复");
//        }

        System.out.println("当前线程的id="+Thread.currentThread().getId());

        //只要传入这个对象，我们就可以实现新增加员工
        //但是这里要调用mapper层，所以我们要做一个转换，将dto转换成实体
        Employee employee = new Employee();

//        employee.setName(employeeDTO.getName());

        //使用对象的属性拷贝，从Dto拷贝到实体【前提是属性名字必须一致】
        BeanUtils.copyProperties(employeeDTO,employee);

        //但是又有一个问题,新增加的，前端传递过来的数据不够用，需要自己设置一部分的状态。

        employee.setStatus(StatusConstant.ENABLE);   //状态是否启用

        //设置默认密码
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));

        //设置当前记录的时间
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());

        //设置当前记录创建人id和修改人id


        //也就是当前登录用户的id
//        employee.setCreateUser(BaseContext.getCurrentId());
//        employee.setUpdateUser(BaseContext.getCurrentId());

        employeeMapper.insert(employee);


    }

    /**
     * 分页查询实现类
     * @param employeePageQueryDTO
     * @return
     */
    @Override
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO) {
        //select * from employee limit 0,10

        //开始分页查询
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());

        Page<Employee> page=employeeMapper.pageQuery(employeePageQueryDTO);

        long total = page.getTotal();
        List<Employee> result = page.getResult();

        return new PageResult(total,result);
    }

    @Override
    public void startOrStop(Integer status,Long id) {
        Employee employee = Employee.builder().status(status).id(id).build();
        employeeMapper.update(employee);
    }

    @Override
    public Employee getEmployeeById(Long id) {
        //getUserById
        Employee employee = employeeMapper.getEmployeeById(id);
        employee.setPassword("******");
        return employee;
    }

    /**
     * 编辑修改员工信息
     * @param employeeDTO
     */
    @Override
    public void update(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);
//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setUpdateUser(BaseContext.getCurrentId());

        employeeMapper.update(employee);
    }
}




